Construction spending during Sept. 2026 was estimated at a seasonally adjusted annual rate of $2,186.1 billion, -1.9% below the revised August estimate of $2,227.4 billion. The September figure is -2.7% below the Sept. 2025 estimate of $2,245.8 billion. During the first nine months of this year, construction spending amounted to $1,649.6 billion, -2.9% below the $1,698.6 billion for the same period in 2025.

Private construction

Spending on private construction was at a seasonally adjusted annual rate of $1,639.3 billion, -2.4% below the revised August estimate of $1,680.3 billion.
Residential construction was at a seasonally adjusted annual rate of $848.8 billion in September, -5.5% below the revised August estimate of $898 billion. Nonresidential construction was at a seasonally adjusted annual rate of $790.6 billion in September, +1.1%  above the revised August estimate of $782.3 billion.
As has been the case over the past year, data centers had the largest monthly and annual spending increases, logging a +8.6%  increase to $96.5 billion that’s up +90.3% over Sept. 2025.

Public construction

In September, the estimated seasonally adjusted annual rate of public construction spending was $546.8 billion, -0.1%  below the revised August estimate of $547.1 billion. Educational construction was at a seasonally adjusted annual rate of $113.1 billion, virtually unchanged from the revised August estimate of $113.1 billion. Highway construction was at a seasonally adjusted annual rate of $149.2 billion, -0.3%  below the revised August estimate of $149.7 billion.